/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraTypes.h
Any change to this structure, or it's GetVariables implementation will require a bump in the CustomNiagaraVersion so that we properly rebuild the scripts You must pad this struct and the results ofGetVariables()to a 16 byte boundary.
struct FNiagaraEmitterParameters
int32
_Pad0
Todo - what else should be inserted here? we could put an array of spawninfos/interp spawn values
int32
_Pad1
float
EmitterAge
int32
EmitterInstanceSeed
int32
EmitterNumParticles
int32
EmitterRandomSeed
float
EmitterSpawnCountScale
int32
EmitterTotalSpawnedParticles